Question

How many images are formed if the two plane mirrors are kept at 180 degrees ?​

Answer 1

Explanation:

Similarly, if the angle between the mirrors is increased the number of images decreases and when this angle is 180 degree, only one image is visible. When the angle between the two mirrors is 180 degree they together act like a single mirror so that only one image is visible.

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Answer 2

Answer:

1 image will be formed if the two plane mirrors are kept at 180 degrees.

Explanation:

The following is the formula for calculating the number of images (n) formed between two plane mirrors inclined at an angle, θ between them:

Number of images formed = 360/ θ - 1

• Substituting the values of different angles between two inclined mirrors we can tabulate the results recorded as follows-

Angle between mirrors                          No. of images formed

45°                                                                             7

60°                                                                            5

120°                                                                           2

180°                                                                            1

0°                                                                           Infinite

                                                                                                                             

Therefore, 1 image will be formed if the two plane mirrors are kept at 180 degrees.

                                             

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